Cisco IOS Troubleshooting commands

Cisco troubleshooting commands

Hardware

show process cpu sorted- cpu utilization

show debug memory leaks summary

show process cpu history

VOICE

show voip rtp conn

show call active voice

show sccp conn- useful for fax transcoder issues

show voice call summary

show call active voice br

show call active voice

show call active voice summary

show mgcp endpoint

show voice port mod #/slot#/port#

show call-manager-fallback all  test SRST

show dial-peer voice summary

debug mgcp packets

debug isdn q931- check pri

IP flow

show ip flow top-talkers

show ip cache flow

IP ROUTING

show ip bgp summary

show ip bgp neighbor x.x.x.x

show ip mroute- multicast routing table

IPSEC Tunnel

show crypto ipsec sa

show crypto isakmp sa

show crypto isakmp policy

debug crypto ipsec

debug crypto isakmp

I Rule for F5 LTM

I- Rule is a power full  code which modify the http header and redirect the http request to any way you want.
One of the common use is to transfer a http request to https based connection for security or www.x.com to https://x.com. I am attaching the sample code for http transfers.

rule 1

rule redirect_HTTPS

when HTTP_REQUEST {

  if { [TCP::local_port] == 80 }{

    HTTP::redirect https://[getfield [HTTP::host] ":" 1][string tolower [HTTP::uri]]

  }

}

rule 2

when HTTP_REQUEST {

            if { [HTTP::host] contains "www.x.com"} {

            HTTP::redirect https://x.com[HTTP::uri] }

}